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The Effect of Magnesium Sulfate Added to Inferior Alveolar Nerve Block on Pain after Lower Third Molar Surgery

The Effect of Magnesium Sulfate as an Adjuvant in Inferior Alveolar Nerve Block on Postoperative Analgesia Following Mandibular Third Molar Surgery

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
TCTR
Registry ID
TCTR20210908005
Enrollment
100
Registered
2021-09-08
Start date
2021-12-01
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Patient with impacted mandibular third molar Magnesium sulfate, postoperative pain, third molar, analgesic effect, Inferior alveolar nerve block

Interventions

Inferior alveolar nerve block prior to third molar surgery with 3 ml syringe containing 1.5 ml of 4% articaine with epinephrine 1:100,000 and 0.3 ml of 50% magnesium sulfate (equal to 150 mg of magnes
Experimental Drug,Experimental Drug,Experimental Drug,Placebo Comparator No treatment
Magnesium sulfate 150 mg,Magnesium sulfate 250 mg,Magnesium sulfate 500 mg,Placebo group

Sponsors

Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 35 Years

Inclusion criteria

Inclusion criteria: - The patients aged between 18 to 35 years old. - All participants must have a healthy status (ASA class I and II ) - Patients who have at least one impacted lower third molar without any inflammation or pathology that require both bone removal and tooth section. - Patient who is able to return for follow-up on the scheduled date, 7 days after the surgery.

Exclusion criteria

Exclusion criteria: - Patient who is allergic to medications used in this study - Patient during pregnancy or breastfeeding - Patient with systemic disease contraindicated to magnesium. - Patient with a psychiatric disorder - Patient with drug abuse - Patient with ongoing pain originated from mandibular third molar or orofacial region - Patient who currently taking medication that effects post-operative pain or magnesium level - Patient who is unable to write the record form

Design outcomes

Primary

MeasureTime frame
Postoperative pain intensity at rest 6, 24, 48, and 72 hours after third molar surgery HP-VAS,Postoperative pain intensity on jaw movement 6, 24, 48, and 72 hours after third molar surgery HP-VAS

Secondary

MeasureTime frame
The success of inferior alveolar nerve block 15 mins after inferior alveolar nerve block and during the operation profound lip numbness within 15 mins after injection and HP-VAS score during operation less than or equal 54 ,Time to first rescue analgesics The duration after surgery until patient reach the level of pain that need analgesic medication Patient reported outcome using a questionnaire,Pain intensity at first analgesic consumption The duration after surgery until patient reach the level of pain that need analgesic medication Patient reported HP-VAS using a questionnaire,The total number of analgesic consumptions 1 week after surgery Patient reported outcome using a questionnaire,The incidence of adverse events from magnesium sulfate 1 week after surgery Patient reported outcome using a questionnaire

Countries

Thailand

Contacts

Public ContactWarit Powcharoen

Chiang Mai University

warit.p@cmu.ac.th6653944440

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026